<!DOCTYPE html>
<title>form.requestSubmit() tests</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<iframe name="iframe" src="about:blank"></iframe>

<script>
test(() => {
  document.body.insertAdjacentHTML('afterbegin', '<form>' +
      '<input type="reset">' +
      '<input type="text">' +
      '<button type="reset"></button>' +
      '<button type="button"></button>' +
      '</form>');
  let form = document.querySelector('form');
  assert_throws_js(TypeError, () => {
    form.requestSubmit(document.body);
  });
  for (let control of form.elements) {
    assert_throws_js(TypeError, () => { form.requestSubmit(control); });
  }
}, 'Passing an element which is not a submit button should throw');

test(() => {
  document.body.insertAdjacentHTML('afterbegin', `<form>
      <input form="" type="submit">
      <button form="form2" type="submit"></button>
      </form>
      <form id="form2"></form>`);
  let form = document.querySelector('form');
  let submitButton = document.createElement('button');
  submitButton.type = 'submit';
  assert_throws_dom('NotFoundError', () => {
    form.requestSubmit(submitButton);
  });

  let buttons = form.querySelectorAll('input, button');
  assert_equals(buttons.length, 2);
  for (let control of buttons) {
    assert_throws_dom('NotFoundError', () => { form.requestSubmit(control) },
        control.outerHTML);
  }
}, 'Passing a submit button not owned by the context object should throw');

test(() => {
  document.body.insertAdjacentHTML('afterbegin', `<input type=submit form="form1">
      <form id="form1" target="_blank">
      <button type="submit"></button>
      <button></button>
      <button type="invalid"></button>
      <input type="submit">
      <input type="image">
      </form>`);
  let form = document.querySelector('form');
  let didDispatchSubmit = false;
  form.addEventListener('submit', event => { event.preventDefault(); didDispatchSubmit = true; });

  assert_equals(form.elements.length, 5);
  for (let control of form.elements) {
    didDispatchSubmit = false;
    form.requestSubmit(control);
    assert_true(didDispatchSubmit, `${control.outerHTML} should submit the form`);
  }
  // <input type=image> is not in form.elements.
  let control = form.querySelector('[type=image]');
  didDispatchSubmit = false;
  form.requestSubmit(control);
  assert_true(didDispatchSubmit, `${control.outerHTML} should submit the form`);
}, 'requestSubmit() should accept button[type=submit], input[type=submit], and input[type=image]');

test(() => {
  document.body.insertAdjacentHTML('afterbegin', '<form><input required></form>');
  let form = document.querySelector('form');
  let invalidControl = form.querySelector('input:invalid');
  let didDispatchInvalid = false;
  invalidControl.addEventListener('invalid', e => { didDispatchInvalid = true; });

  form.requestSubmit();
  assert_true(didDispatchInvalid);
}, 'requestSubmit() should trigger interactive form validation');

test(() => {
  document.body.insertAdjacentHTML('afterbegin',
      '<form><input type=submit></form>');
  let form = document.querySelector('form');
  let submitButton = form.elements[0];
  let submitCounter = 0;
  form.addEventListener('submit', e => {
    ++submitCounter;
    form.requestSubmit();
    e.preventDefault();
  }, {once: true});
  form.requestSubmit();
  assert_equals(submitCounter, 1, 'requestSubmit() + requestSubmit()');

  submitCounter = 0;
  form.addEventListener('submit', e => {
    ++submitCounter;
    submitButton.click();
    e.preventDefault();
  }, {once: true});
  form.requestSubmit();
  assert_equals(submitCounter, 1, 'requestSubmit() + click()');

  submitCounter = 0;
  form.addEventListener('submit', e => {
    ++submitCounter;
    form.requestSubmit();
    e.preventDefault();
  }, {once: true});
  submitButton.click();
  assert_equals(submitCounter, 1, 'click() + requestSubmit()');
}, 'requestSubmit() doesn\'t run form submission reentrantly');

test(() => {
  document.body.insertAdjacentHTML('afterbegin',
      '<form><input type=submit><input required></form>');
  let form = document.querySelector('form');
  let submitButton = form.elements[0];
  let invalidControl = form.elements[1];
  let invalidCounter = 0;
  invalidControl.addEventListener('invalid', e => {
    ++invalidCounter;
    if (invalidCounter < 10)
      form.requestSubmit();
  }, {once: true});
  form.requestSubmit();
  assert_equals(invalidCounter, 1, 'requestSubmit() + requestSubmit()');

  invalidCounter = 0;
  invalidControl.addEventListener('invalid', e => {
    ++invalidCounter;
    if (invalidCounter < 10)
      submitButton.click();
  }, {once: true});
  form.requestSubmit();
  assert_equals(invalidCounter, 1, 'requestSubmit() + click()');

  invalidCounter = 0;
  invalidControl.addEventListener('invalid', e => {
    ++invalidCounter;
    if (invalidCounter < 10)
      form.requestSubmit();
  }, {once: true});
  submitButton.click();
  assert_equals(invalidCounter, 1, 'click() + requestSubmit()');
}, 'requestSubmit() doesn\'t run interactive validation reentrantly');

test(() => {
  let form = document.createElement('form');
  let submitCounter = 0;
  form.addEventListener('submit', e => { ++submitCounter; e.preventDefault(); });
  form.requestSubmit();
  assert_equals(submitCounter, 0);
}, 'requestSubmit() for a disconnected form should not submit the form');

async_test(t => {
  window.addEventListener('load', t.step_func(() => {
    document.body.insertAdjacentHTML('afterbegin', `
<form action="/common/blank.html">
<input required>
<input type=submit formnovalidate formtarget=iframe name=s value=v>
</form>`);
    let form = document.body.querySelector('form');
    let iframe = document.body.querySelector('iframe');
    assert_true(form.matches(':invalid'), 'The form is invalid.');
    // The form should be submitted though it is invalid.
    iframe.addEventListener('load', t.step_func_done(() => {
      assert_not_equals(iframe.contentWindow.location.search.indexOf('s=v'), -1);
    }));
    form.requestSubmit(form.querySelector('[type=submit]'));
  }));
}, 'The value of the submitter should be appended, and form* ' +
    'attributes of the submitter should be handled.');

test(() => {
  document.body.insertAdjacentHTML('afterbegin', `<form>
      <input name="n1" value="v1">
      <button type="submit" name="n2" value="v2"></button>
      </form>
      <form id="form2"></form>`);
  let form = document.querySelector('form');
  let formDataInEvent = null;
  let submitter = form.querySelector('button[type=submit]');
  form.addEventListener('submit', e => {
    e.preventDefault();
    formDataInEvent = new FormData(e.target);
  });

  form.requestSubmit(submitter);
  assert_equals(formDataInEvent.get('n1'), 'v1');
  assert_false(formDataInEvent.has('n2'));
}, 'The constructed FormData object should not contain an entry for the submit button that was used to submit the form.');

</script>
